random.h

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/**********************************************************************
 *<
        FILE: random.h

        DESCRIPTION: Pseudo-random number generator

        CREATED BY: Jeff Kowalski

        HISTORY: Created 11 February 1999

 *>     Copyright (c) 1999, All Rights Reserved.
 **********************************************************************/

#pragma once
#include "maxheap.h"

class Random: public MaxHeapOperators {
    private:
        long   m_seed;

    public:
        // The constructor will automatically initialize the seed
        UtilExport Random ();

        // Analogues of the random rountines from MSVCRT:
        UtilExport void    srand (unsigned int seed = 1); // akin to global ::srand

        UtilExport int     rand  ();                      // akin to global ::rand
        UtilExport static const int s_rand_max;           // akin to global RAND_MAX

        inline int get(int max_exclusive = s_rand_max+1, int min_inclusive = 0) {
            return (this->rand() % (max_exclusive - min_inclusive) + min_inclusive);
        }

        inline float getf(float max_exclusive = 1.0f, float min_inclusive = 0.0f) {
            return (this->rand() / (s_rand_max+1.0f) * (max_exclusive - min_inclusive) + min_inclusive);
        }
};